Bump jvm from 1.9.22 to 1.9.23 in /springboot-app (#148)

* Bump jvm from 1.9.22 to 1.9.23 in /springboot-app

Bumps [jvm](https://github.com/JetBrains/kotlin) from 1.9.22 to 1.9.23.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.9.23/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.22...v1.9.23)

---
updated-dependencies:
- dependency-name: jvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update README.md

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Roger Viñas Alcon <roger.vinas@fastzink.com>

README.md

@@ -1,6 +1,6 @@
 [![SpringBoot](https://github.com/rogervinas/top-5-server-side-kotlin-frameworks-2022/actions/workflows/springboot.yml/badge.svg)](https://github.com/rogervinas/top-5-server-side-kotlin-frameworks-2022/actions/workflows/springboot.yml)
 ![Java](https://img.shields.io/badge/Java-21-blue?labelColor=black)
-![Kotlin](https://img.shields.io/badge/Kotlin-1.9.22-blue?labelColor=black)
+![Kotlin](https://img.shields.io/badge/Kotlin-1.9.23-blue?labelColor=black)
 ![SpringBoot](https://img.shields.io/badge/SpringBoot-3.2.3-blue?labelColor=black)
 
 [![Quarkus](https://github.com/rogervinas/top-5-server-side-kotlin-frameworks-2022/actions/workflows/quarkus.yml/badge.svg)](https://github.com/rogervinas/top-5-server-side-kotlin-frameworks-2022/actions/workflows/quarkus.yml)

springboot-app/build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
   id("org.springframework.boot") version "3.2.3"
   id("io.spring.dependency-management") version "1.1.4"
-  kotlin("jvm") version "1.9.22"
+  kotlin("jvm") version "1.9.23"
   kotlin("plugin.spring") version "1.9.22"
 }